Meghan Markle's entry into the royal family began with her new in-laws appearing to be ever-so-slightly scandalized by her non-traditional wedding day choices and those breaks with the past may have continued this weekend.

The duchess has reportedly also been known to eschew the royal rule that ladies consistently wear pantyhose.

Meanwhile, Markle, like her sister-in-law, Kate Middleton, was careful to follow the rule of curtseying to the queen as she rode past in a carriage.

In celebration of the queen's birthday, which is actually in April, over 1,400 parading soldiers, 200 horses and 400 musicians come together each June in a display of military precision and horsemanship.

With the streets lined with crowds waving flags, the parade moves from Buckingham Palace and down the Mall to Horse Guard's Parade, alongside members of the royal family on horseback and in carriages.

The display closes with a grand Royal Air Force fly-by.

When the queen first arrives, she's greeted by a royal salute before she carries out an inspection of the troops, who are fully trained and operational soldiers wearing the ceremonial uniform of red tunics and bearskin hats.

The queen is then joined by other members of the royal family on the balcony at Buckingham Palace before a 41-gun salute is fired to mark the occasion.